body {
    font-family: system-ui, sans-serif;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
    line-height: 1.7;
    color: #333;
}
h1, h2 { line-height: 1.3; }
a { color: #246; }
nav { margin-bottom: 30px; }
article { margin-bottom: 50px; }
time { color: #777; font-size: 0.9em; }
img { max-width: 100%; height: auto; }